Ya, it looks like the fish radar has a couple of issues with it. If you can believe it thats all happening in the world space instead of a widget. So i think the cube malfunctioning might have something to do with collision maybe? As for the graphics options, I think i just went a little too hard on the looks of the game lol.
For the fishing game you just hover the block over the fish until the bar reaches the top. Although I think the minigame might need some more work to get it tuned in right.